Reset opt count on optimized code map lookup failure.

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index cccc3e76297b20a2ade4272efcd978e7d0c2f06b..7d383551fc8c4fb9f2ba0e3aa23b6eca3ff30016 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -733,6 +733,12 @@ Handle<JSFunction> Factory::NewFunctionFromSharedFunctionInfo(
     // Caching of optimized code enabled and optimized code found.
     function_info->InstallFromOptimizedCodeMap(*result, index);
     return result;
+  } else {
+    // The optimization count should be tied to the context, similar to the
+    // optimized code map.  But for simplicity's sake we just reset the opt
+    // count whenever the optimized code map lookup fails.  This happens
+    // only when the function has never been optimized for the current context.
+    function_info->set_opt_count(0);
   }
 
   if (isolate()->use_crankshaft() &&